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scsi: core: add scsi_io_completion_reprep helper

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Since the action "reprep" is called from two places, rather than repeat the
code, make a new scsi_io_completion helper with "reprep" as its suffix.

Signed-off-by: Douglas Gilbert <dgilbert@interlog.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Douglas Gilbert 2018-06-23 12:22:18 +02:00 committed by Martin K. Petersen
parent da32baea17
commit 4ae61c68f7
1 changed files with 18 additions and 23 deletions
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41
drivers/scsi/scsi_lib.c
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@ -761,6 +761,20 @@ static blk_status_t scsi_result_to_blk_status(struct scsi_cmnd *cmd, int result)
}
}
/* Helper for scsi_io_completion() when "reprep" action required. */
static void scsi_io_completion_reprep(struct scsi_cmnd *cmd,
struct request_queue *q)
{
/* A new command will be prepared and issued. */
if (q->mq_ops) {
scsi_mq_requeue_cmd(cmd);
} else {
/* Unprep request and put it back at head of the queue. */
scsi_release_buffers(cmd);
scsi_requeue_command(q, cmd);
}
}
/* Helper for scsi_io_completion() when special action required. */
static void scsi_io_completion_action(struct scsi_cmnd *cmd, int result)
{
@ -906,15 +920,7 @@ static void scsi_io_completion_action(struct scsi_cmnd *cmd, int result)
return;
/*FALLTHRU*/
case ACTION_REPREP:
/* Unprep the request and put it back at the head of the queue.
* A new command will be prepared and issued.
*/
if (q->mq_ops) {
scsi_mq_requeue_cmd(cmd);
} else {
scsi_release_buffers(cmd);
scsi_requeue_command(q, cmd);
}
scsi_io_completion_reprep(cmd, q);
break;
case ACTION_RETRY:
/* Retry the same command immediately */
@ -1091,20 +1097,9 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes)
* If there had been no error, but we have leftover bytes in the
* requeues just queue the command up again.
*/
if (result == 0) {
/*
* Unprep the request and put it back at the head of the
* queue. A new command will be prepared and issued.
* This block is the same as case ACTION_REPREP in
* scsi_io_completion_action() above.
*/
if (q->mq_ops) {
scsi_mq_requeue_cmd(cmd);
} else {
scsi_release_buffers(cmd);
scsi_requeue_command(q, cmd);
}
} else
if (result == 0)
scsi_io_completion_reprep(cmd, q);
else
scsi_io_completion_action(cmd, result);
}